Quick Answer: Why Does My Metal Roof Look Wavy?

What are the problems with metal roofs?

Disadvantages of metal roofsAffordability.

Metal roofs can be as much as two or three times more expensive than other roofing materials.

Noisiness.

Metal roofs can be noisy, especially during a heavy rain or hailstorm.

Expansion and contraction.

Inconsistency of color match.

Performance..

How do you fix condensation on a metal roof?

Traditionally, condensation is managed by insulating the metal roof so that the panel temperature never reaches the dew point. This is often accomplished using vinyl-backed fiberglass insulation to prevent humid air from coming into contact with the cooler metal roof (which may be at or below the dew point).

How much does a roof cost for a 2000 sq ft house?

Average Cost to Replace a Roof by House SizeHouse (& Roof**) by Square FootRe-Roofing Cost*1,800 (1,897)$6,700 – $9,5001,900 (2,003)$7,000 – $10,0002,000 (2,108)$7,400 – $10,5002,500 (2,635)$9,000 – $13,0007 more rows

Should I insulate under metal roof?

Does a metal roof need insulation? Yes, it is highly recommended to use insulation with your metal roof. Insulation helps improve your home’s energy efficiency, keeping you warm during the winter and cool during the summer.

Can I put metal roofing over OSB?

No, you do not need to screw into solid lumber (joists, stripping,etc.). As you can see, the thinnest material they recommend is 1/2” (7/16”) OSB board at 9” on center up to 24” on center. Be sure to follow their instructions in order to obtain the warranty. Metal roofing screws need to go into framing.

What does a wavy roof indicate?

A layer of felt paper goes down before the shingle does for every installation, which essentially acts as a base. If the material was damp, if the day was humid, or if the paper bubbled up a bit then it can produce a wavy appearance on your new roof.

What causes ripples in a roof?

Rippling due to poor installation can show up after a year or even two after you get your roof installed. Due to temperature changes, the sheathing will expand and contract. If the contractors did not leave enough space in between the sheathing it can expand pushing the shingles upwards causing them to ripple.

Can you roof over wet plywood?

A: It is never a good idea to install a roof over wet plywood or any type of roof sheathing. … Installing shingles over wet decking also will void any warranty you might have from the shingle manufacturer. Most roofs’ rafters are set 2 feet apart and the plywood decking should be a minimum of 7/16 of an inch thick.

Do you need a ridge vent with a metal roof?

A metal roof is intrinsically durable and energy-efficient, but it needs proper ventilation to live up to its expectations. If the existing roof is properly vented, then a ridge vent is in order.